Rate adaptation for wireless video streaming based on error statistics

Authors:
Janio M. Monteiro;Ricardo N. Vaz;Antonio M. Grilo;Mario S. Nunes
Affiliations:
University of Algarve/INESC-ID, Lisboa, Portugal.;INESC-ID/IST, Lisboa 1000, Portugal.;INESC-ID/IST, Lisboa 1000, Portugal.;INESC-ID/IST, Lisboa 1000, Portugal
Venue:
International Journal of Wireless and Mobile Computing
Year:
2007

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Abstract

This paper presents a new rate-control algorithm for live video streaming over wireless IP networks, which is based on selective frame discarding. In the proposed mechanism excess 'P' frames are dropped from the output queue at the sender using a congestion estimate based on packet loss statistics obtained from RTCP feedback and from the Data Link (DL) layer. The performance of the algorithm is evaluated through computer simulation. This paper also presents a characterisation of packet losses owing to transmission errors and congestion, which can help in choosing appropriate strategies to maximise the video quality experienced by the end user.